These are working as of 2nd July 2021, some dispense once daily, once every hour etc Please return testnet coins when you're done testing so that others can keep building
https://testnet-faucet.mempool.co/
https://coinfaucet.eu/en/btc-testnet/
https://bitcoinfaucet.uo1.net/
https://onchain.io/bitcoin-testnet-faucet
tb1pp44j6wefrlu3vadf4q532qx3xspuvjsae8m0jwf2jw5x7xy27vwq9yv5p8